# Login to Perspective using a MODBUS Card Reader

**URL:** <https://forum.inductiveautomation.com/t/login-to-perspective-using-a-modbus-card-reader/100861>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [January 14, 2025, 3:41pm UTC](https://forum.inductiveautomation.com/t/login-to-perspective-using-a-modbus-card-reader/100861 "2025-01-14T15:41:09Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Samuel\_Sueur](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@Samuel\_Sueur](https://forum.inductiveautomation.com/u/Samuel_Sueur)\
**Post date:** [January 14, 2025, 3:41pm UTC](https://forum.inductiveautomation.com/t/login-to-perspective-using-a-modbus-card-reader/100861/1 "2025-01-14T15:41:09Z")

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Hi all,

Pretty sure I know this answer but I would like to gather some people's experience regarding logging in to perspective using the "Badge" feature.

Does this feature only work with a USB card reader emulating key events and finishing with a carriage return ?

Can it work with a MODBUS card reader that is declared in the gateway, and once the badge is scanned, the string would be sent to the perspective login page ?

Or the only possibility is using a card reader directly plugged to the computer emulating key events?  
What about smartphones & tablets ? Is there even a way to login using a badge ?

Thanks all

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**Author:** ![dkhayes117](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/dkhayes117/32/68344_2.png) [@dkhayes117](https://forum.inductiveautomation.com/u/dkhayes117)\
**Post date:** [January 14, 2025, 3:51pm UTC](https://forum.inductiveautomation.com/t/login-to-perspective-using-a-modbus-card-reader/100861/2 "2025-01-14T15:51:10Z")

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I don't think there is a way to do this with the MODBUS option you mentioned.

> [@Samuel\_Sueur](#):
>
> What about smartphones & tablets ? Is there even a way to login using a badge ?

You can do this if you set the NFC reader to output key events like you would with a USB reader.

You can vote on these types of ideas to help IA set their dev roadmap.  
[Add NFC functionality for Badge Authentication Utility | Voters | Inductive Automation](https://ideas.inductiveautomation.com/ignition-features-and-ideas/p/add-nfc-functionality-for-badge-authentication-utility)

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [January 14, 2025, 4:17pm UTC](https://forum.inductiveautomation.com/t/login-to-perspective-using-a-modbus-card-reader/100861/3 "2025-01-14T16:17:53Z")

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> [@Samuel\_Sueur](#):
>
> the string would be sent to the perspective login page ?

Which Perspective login page?

What you are asking would require, at a minimum, reliable identification of the machine a Perspective session is running on. And access to a IdP's page within that session. Both of which are currently impossible.

It would be possible with Vision if it auto-logged in, checked MAC ID (or other physical ID) in a startup event, then used a message handler to filter for the desired station and performed an switch user operation.

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**Author:** ![Samuel\_Sueur](https://avatars.discourse-cdn.com/v4/letter/s/e36b37/32.png) [@Samuel\_Sueur](https://forum.inductiveautomation.com/u/Samuel_Sueur)\
**Post date:** [January 14, 2025, 4:22pm UTC](https://forum.inductiveautomation.com/t/login-to-perspective-using-a-modbus-card-reader/100861/4 "2025-01-14T16:22:34Z")

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Perfect, both your answers confirm what I was thinking.  
Even on the Vision part.

Thanks a lot both.